<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>菜价单</title>
    <style>
        table {
            width: 300px;
            border-collapse: collapse;
            margin: 20px auto;
        }
        th, td {
            border: 1px solid black;
            text-align: center;
            padding: 10px;
        }
        .header {
            font-weight: bold;
            font-size: 18px;
        }
        .row-header {
            writing-mode: vertical-rl;
            text-align: center;
        }
    </style>
</head>
<body>
    <table>
        <!-- 表头 -->
        <tr>
            <th colspan="3" class="header">菜价单</th>
        </tr>
        <!-- 列名部分 -->
        <tr>
            <th class="row-header" rowspan="4">序号</th>
            <th>菜名</th>
            <th>菜价</th>
        </tr>
        <!-- 内容部分 -->
        <tr>
            <td>白菜</td>
            <td>3￥</td>
        </tr>
        <tr>
            <td>青菜</td>
            <td>3￥</td>
        </tr>
        <tr>
            <td>芹菜</td>
            <td>3￥</td>
        </tr>
    </table>
</body>
</html>
